summaryrefslogtreecommitdiff
path: root/drivers/usb/input/wacom_sys.c
blob: 1fe48208c2f4cd6d5aa875a31f1e907fd2607d10 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
/*
 * drivers/usb/input/wacom_sys.c
 *
 *  USB Wacom Graphire and Wacom Intuos tablet support - system specific code
 */

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include "wacom.h"
#include "wacom_wac.h"

#define USB_REQ_GET_REPORT	0x01
#define USB_REQ_SET_REPORT	0x09

static int usb_get_report(struct usb_interface *intf, unsigned char type,
				unsigned char id, void *buf, int size)
{
	return usb_control_msg(interface_to_usbdev(intf),
		usb_rcvctrlpipe(interface_to_usbdev(intf), 0),
		USB_REQ_GET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
		(type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
		buf, size, 100);
}

static int usb_set_report(struct usb_interface *intf, unsigned char type,
				unsigned char id, void *buf, int size)
{
	return usb_control_msg(interface_to_usbdev(intf),
		usb_sndctrlpipe(interface_to_usbdev(intf), 0),
                USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
                (type << 8) + id, intf->altsetting[0].desc.bInterfaceNumber,
		buf, size, 1000);
}

static struct input_dev * get_input_dev(struct wacom_combo *wcombo)
{
	return wcombo->wacom->dev;
}

static void wacom_sys_irq(struct urb *urb)
{
	struct wacom *wacom = urb->context;
	struct wacom_combo wcombo;
	int retval;

	switch (urb->status) {
	case 0:
		/* success */
		break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
		return;
	default:
		dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
		goto exit;
	}

	wcombo.wacom = wacom;
	wcombo.urb = urb;

	if (wacom_wac_irq(wacom->wacom_wac, (void *)&wcombo))
		input_sync(get_input_dev(&wcombo));

 exit:
	retval = usb_submit_urb (urb, GFP_ATOMIC);
	if (retval)
		err ("%s - usb_submit_urb failed with result %d",
		     __FUNCTION__, retval);
}

void wacom_report_key(void *wcombo, unsigned int key_type, int key_data)
{
	input_report_key(get_input_dev((struct wacom_combo *)wcombo), key_type, key_data);
	return;
}

void wacom_report_abs(void *wcombo, unsigned int abs_type, int abs_data)
{
	input_report_abs(get_input_dev((struct wacom_combo *)wcombo), abs_type, abs_data);
	return;
}

void wacom_report_rel(void *wcombo, unsigned int rel_type, int rel_data)
{
	input_report_rel(get_input_dev((struct wacom_combo *)wcombo), rel_type, rel_data);
	return;
}

void wacom_input_event(void *wcombo, unsigned int type, unsigned int code, int value)
{
	input_event(get_input_dev((struct wacom_combo *)wcombo), type, code, value);
	return;
}

__u16 wacom_be16_to_cpu(unsigned char *data)
{
	__u16 value;
	value = be16_to_cpu(*(__be16 *) data);
	return value;
}

__u16 wacom_le16_to_cpu(unsigned char *data)
{
	__u16 value;
	value = le16_to_cpu(*(__le16 *) data);
	return value;
}

void wacom_input_sync(void *wcombo)
{
	input_sync(get_input_dev((struct wacom_combo *)wcombo));
	return;
}

static int wacom_open(struct input_dev *dev)
{
	struct wacom *wacom = input_get_drvdata(dev);

	wacom->irq->dev = wacom->usbdev;
	if (usb_submit_urb(wacom->irq, GFP_KERNEL))
		return -EIO;

	return 0;
}

static void wacom_close(struct input_dev *dev)
{
	struct wacom *wacom = input_get_drvdata(dev);

	usb_kill_urb(wacom->irq);
}

void input_dev_g4(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->evbit[0] |= BIT(EV_MSC);
	input_dev->mscbit[0] |= BIT(MSC_SERIAL);
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
	input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_4);
}

void input_dev_g(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->evbit[0] |= BIT(EV_REL);
	input_dev->relbit[0] |= BIT(REL_WHEEL);
	input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE) | BIT(BTN_STYLUS2);
	input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
}

void input_dev_i3s(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_FINGER);
	input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_0) | BIT(BTN_1) | BIT(BTN_2) | BIT(BTN_3);
	input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0);
}

void input_dev_i3(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_4) | BIT(BTN_5) | BIT(BTN_6) | BIT(BTN_7);
	input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
}

void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->evbit[0] |= BIT(EV_MSC) | BIT(EV_REL);
	input_dev->mscbit[0] |= BIT(MSC_SERIAL);
	input_dev->relbit[0] |= BIT(REL_WHEEL);
	input_dev->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE) | BIT(BTN_SIDE) | BIT(BTN_EXTRA);
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER) | BIT(BTN_TOOL_MOUSE)	| BIT(BTN_TOOL_BRUSH)
		| BIT(BTN_TOOL_PENCIL) | BIT(BTN_TOOL_AIRBRUSH) | BIT(BTN_TOOL_LENS) | BIT(BTN_STYLUS2);
	input_set_abs_params(input_dev, ABS_DISTANCE, 0, wacom_wac->features->distance_max, 0, 0);
	input_set_abs_params(input_dev, ABS_WHEEL, 0, 1023, 0, 0);
	input_set_abs_params(input_dev, ABS_TILT_X, 0, 127, 0, 0);
	input_set_abs_params(input_dev, ABS_TILT_Y, 0, 127, 0, 0);
	input_set_abs_params(input_dev, ABS_RZ, -900, 899, 0, 0);
	input_set_abs_params(input_dev, ABS_THROTTLE, -1023, 1023, 0, 0);
}

void input_dev_pl(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_STYLUS2) | BIT(BTN_TOOL_RUBBER);
}

void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
{
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_RUBBER);
}

static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_endpoint_descriptor *endpoint;
	struct wacom *wacom;
	struct wacom_wac *wacom_wac;
	struct input_dev *input_dev;
	int error = -ENOMEM;
	char rep_data[2], limit = 0;

	wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
	wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!wacom || !input_dev || !wacom_wac)
		goto fail1;

	wacom_wac->data = usb_buffer_alloc(dev, 10, GFP_KERNEL, &wacom->data_dma);
	if (!wacom_wac->data)
		goto fail1;

	wacom->irq = usb_alloc_urb(0, GFP_KERNEL);
	if (!wacom->irq)
		goto fail2;

	wacom->usbdev = dev;
	wacom->dev = input_dev;
	usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
	strlcat(wacom->phys, "/input0", sizeof(wacom->phys));

	wacom_wac->features = get_wacom_feature(id);
	BUG_ON(wacom_wac->features->pktlen > 10);

	input_dev->name = wacom_wac->features->name;
	wacom->wacom_wac = wacom_wac;
	usb_to_input_id(dev, &input_dev->id);

	input_dev->dev.parent = &intf->dev;

	input_set_drvdata(input_dev, wacom);

	input_dev->open = wacom_open;
	input_dev->close = wacom_close;

	input_dev->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS);
	input_dev->keybit[LONG(BTN_DIGI)] |= BIT(BTN_TOOL_PEN) | BIT(BTN_TOUCH) | BIT(BTN_STYLUS);
	input_set_abs_params(input_dev, ABS_X, 0, wacom_wac->features->x_max, 4, 0);
	input_set_abs_params(input_dev, ABS_Y, 0, wacom_wac->features->y_max, 4, 0);
	input_set_abs_params(input_dev, ABS_PRESSURE, 0, wacom_wac->features->pressure_max, 0, 0);
	input_dev->absbit[LONG(ABS_MISC)] |= BIT(ABS_MISC);

	wacom_init_input_dev(input_dev, wacom_wac);

	endpoint = &intf->cur_altsetting->endpoint[0].desc;

	usb_fill_int_urb(wacom->irq, dev,
			 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
			 wacom_wac->data, wacom_wac->features->pktlen,
			 wacom_sys_irq, wacom, endpoint->bInterval);
	wacom->irq->transfer_dma = wacom->data_dma;
	wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

	error = input_register_device(wacom->dev);
	if (error)
		goto fail3;

	/* Ask the tablet to report tablet data. Repeat until it succeeds */
	do {
		rep_data[0] = 2;
		rep_data[1] = 2;
		usb_set_report(intf, 3, 2, rep_data, 2);
		usb_get_report(intf, 3, 2, rep_data, 2);
	} while (rep_data[1] != 2 && limit++ < 5);

	usb_set_intfdata(intf, wacom);
	return 0;

 fail3:	usb_free_urb(wacom->irq);
 fail2:	usb_buffer_free(dev, 10, wacom_wac->data, wacom->data_dma);
 fail1:	input_free_device(input_dev);
	kfree(wacom);
	kfree(wacom_wac);
	return error;
}

static void wacom_disconnect(struct usb_interface *intf)
{
	struct wacom *wacom = usb_get_intfdata (intf);

	usb_set_intfdata(intf, NULL);
	if (wacom) {
		usb_kill_urb(wacom->irq);
		input_unregister_device(wacom->dev);
		usb_free_urb(wacom->irq);
		usb_buffer_free(interface_to_usbdev(intf), 10, wacom->wacom_wac->data, wacom->data_dma);
		kfree(wacom->wacom_wac);
		kfree(wacom);
	}
}

static struct usb_driver wacom_driver = {
	.name =		"wacom",
	.probe =	wacom_probe,
	.disconnect =	wacom_disconnect,
};

static int __init wacom_init(void)
{
	int result;
	wacom_driver.id_table = get_device_table();
	result = usb_register(&wacom_driver);
	if (result == 0)
		info(DRIVER_VERSION ":" DRIVER_DESC);
	return result;
}

static void __exit wacom_exit(void)
{
	usb_deregister(&wacom_driver);
}

module_init(wacom_init);
module_exit(wacom_exit);